# BookFast 品牌服務預約專屬App vs ChironMotion IMU

The clearest difference is in-app purchases: BookFast 品牌服務預約專屬App at none against ChironMotion IMU's 2. BookFast 品牌服務預約專屬App also leads on update cadence (every 2 weeks vs every 2 months) and iOS requirement (15.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. ChironMotion IMU sells 2 in-app purchases, starting at $3.99 per month. BookFast 品牌服務預約專屬App asks for nothing beyond the download.

BookFast 品牌服務預約專屬App ships an update every 2 weeks, ChironMotion IMU every 2 months. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | BookFast 品牌服務預約專屬App | ChironMotion IMU |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Size | 89 MB | 21 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [NewPOS TECHNOLOGY CORPORATION](https://appshunter.io/developer/1078540734) | [Yi-Fu Chen](https://appshunter.io/developer/1873701789) |

## What reviewers say

### BookFast 品牌服務預約專屬App

[App page](https://appshunter.io/ios/app/bookfast-app/id1478098377)

**Features:** Vision Pro support

**In-app purchases:** none


### ChironMotion IMU

[App page](https://appshunter.io/ios/app/chironmotion-imu/id6758951844)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly Plan | $3.99 | per month |
| Pro Yearly Plan | $39.99 | per year |


## Frequently asked questions

### Is BookFast 品牌服務預約專屬App free?

BookFast 品牌服務預約專屬App is free to download, with no in-app purchases.

### Is ChironMotion IMU free?

ChironMotion IMU is free to download, with in-app purchases available.

### Do BookFast 品牌服務預約專屬App or ChironMotion IMU have ads?

Neither BookFast 品牌服務預約專屬App nor ChironMotion IMU shows ads.

### Which is updated more often, BookFast 品牌服務預約專屬App or ChironMotion IMU?

BookFast 品牌服務預約專屬App ships an update every 2 weeks, and ChironMotion IMU every 2 months. Most recently, BookFast 品牌服務預約專屬App was updated on October 26, 2026 and ChironMotion IMU on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*